Give an example, with justification? An element of Q[x] of degree 4, with no roots in Q?
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Originally Posted by puneet Give an example, with justification? An element of Q[x] of degree 4, with no roots in Q? too many.. here is one.. $\displaystyle x^4+1$ it doesn't even have any roots is $\displaystyle \mathbb{R}$.. Ü
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